Toner production method and polymer
US10216108B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2017 |
| Grant date | Feb 26, 2019 |
| Priority date | — |
| Expiry date | Aug 10, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/0918
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner production method including: a melt-kneading step of melt-kneading a resin composition including a binder resin, a colorant, a wax, and a wax dispersant to obtain a melt-kneaded product; and a pulverizing step of pulverizing the melt-kneaded product. Where the temperature of the melt-kneaded product at the end of the melt-kneading step is Tk (° C.), and the softening point of the wax dispersant is Tm (° C.), the relationship of −18≤[Tk−Tm]≤10 is satisfied. The wax dispersant is a polymer in which a styrene acrylic polymer is graft-polymerized to a polyolefin. The styrene acrylic polymer has a monomer unit derived from α-methylstyrene and a monomer unit derived from a cycloalkyl (meth)acrylate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.